Cartridge rack



FIG. 1 is a perspective view of a cartridge rack showing my new design, the broken lines showing cartridges being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is an enlarged left side elevational view thereof;

FIG. 5 is an enlarged right side elevational view thereof;

FIG. 6 is a rear elevational view of FIG. 1; and,

FIG. 7 is a bottom plan view of FIG. 1. 

The ornamental design for a cartridge rack, as shown and described. 